Hilary Duff was spotted at the grocery store in Hollywood on Monday, and the preggers starlet smiled for photogs as she made her way across the parking lot.

Interestingly enough, Hil decided to rock a striped shirt later in the day as part of her Halloween costume. In case you missed it, click here to see Hil and hubby Mike Comrie, along with a handful of other stars who went all out on October 31!